Posted by
Franklin Shaffer-2 on
Apr 09, 2008; 1:21pm
URL: http://imagej.273.s1.nabble.com/detect-motion-across-frames-tp3696278p3696279.html
I have images that resemble clouds and I am also trying to track the motion of clouds from frame-to-frame. Although my "clouds" are actually clusters of small particles.
I've been considering using cross-correlation techniques. I know they will work because I have large structures that move small displacements from frame-to-frame. Cross-correlating will give the magnitude and direction of the displacement of the structure between frames.
Does anyone know if ImageJ has the capability to use cross-correlations to measure the displacement of large structures from frame-to-frame?
I'm a new user to ImageJ and I continue to be very impressed. I was going to buy a commercial image processing software package for $5000, but I find ImageJ to be better! I will be adding plugins to ImageJ in the near future.
Frank Shaffer
USDOE
>>> "Brian Willkie" <
[hidden email]> 4/7/2008 2:38 PM >>>
Hello,
I searched the list archives briefly, but didn't find this topic
specifically. It's entirely possible that I simply didn't know what to
look for.
I have access to GOES 12 satellite data (i.e. cloud data) as either
raw data, TIFF files - frame by frame - or High definition QuickTime
movie.
I'd like to use some image-processing techniques to identify pixels
that you and I would group togther as a clouds, and track their motion
from one frame to the next.
Analyze particles seems to work well to identify clouds in a given
frame. Are there any commands / plug-ins / algorithms to track their
motion/change across frames (i.e. can I get a dataset that tells me
that a given particle in the current frame is the same particle as one
found in the previous frame, although its size, shape, and/or position
have changed slightly)?
Thanks,
Brian